An organic EL display apparatus has a driving circuit. In the driving
circuit, the source and drain of a driving transistor and the anode and
cathode of an organic EL device are connected in series between voltage
sources. A current passes between the source and drain of the driving
transistor and between the anode and cathode of the organic EL device in
accordance with a voltage between the gate and source of the driving
transistor. Consequently, the organic EL device emits light. In order to
store the voltage in the capacitor, a constant voltage source is
connected to the gate of the driving transistor and the above-described
series connection is disconnected at the source of the driving transistor
and connected to a signal source. Then, a current signal output from the
signal source passes between the source and drain of the driving
transistor, and charges are stored in a capacitor in accordance with the
current signal.